定语从句一. 概念：1定语从句：在某一复合句中修饰某一名词或代词,或者修饰整个主句的从句叫定语从句。Do you know the boy who came here yesterday?2先行词：被定语从句修饰的词叫先行词。3关系代词/ 副词：引导定语从句的有关系代词who, whom, whose, which, that, as 和关系副词when, where, why。关系代词和关系副词既连接定语从句和它修饰的先行词，同时又充当定语从句中的一个句子成分（主语、宾语、表语、定语、状语）。二. 关系代词引导的定语从句(who, whom, whose, which, that, as)1. who指人，主格，在定语从句中作主语。The man who has just left is my uncle.（06北京）Women drink more than two cups of coffee a day have a greater chance of having heart disease than those dont.A. who; 不填 B不填;who C. who; who D. 不填;不填2.whom指人，宾格，在定语从句中作宾语。在口语和非正式用语中常省略whom。Where is the boy (whom ) I saw this morning?The fellow ( whom) I spoke to made no answer at first.（05北京） why does she always ask you for help?There is no one else _, is there?A. who to turn to B. she can turn to C. for whom to turn D. for her to turn注：当whom作介宾，而这个介词又放在关系代词前面时，whom不能省。The fellow to whom I spoke made no answer at first.(02上海) Alec asked the policeman _ he worked to contact him whenever there was an accident.A. with him B. who C. with whom D. whom3.whose 多指人，也指物(= of which)，whose为所有格，在定语从句中作定语。Granny Wang is looking after the little boy whose parents have gone to Shanghai. The trees whose leaves are green all the year round are pine trees.(01上海春季) Have you seen the film “Titanic”, _ leading actor is world famous.A. its B. its C. whose D. whichC. his real name D. whose real name（06福建）Look out! Dont get too close to the house _roof is under repair.A. whose B. which C. of which D. what（09安徽） Many children， parents are away working in big cities，are taken good care of in the village.A. their B. whose C. of them D. with whom（09天津） A person _ e-mail account is full wont be able to send or receive any e-mails.A. who B. whom C. whose D. whoever4. which1). 指物，在定语从句中作主语或宾语。作宾语时常省略。当which作介宾，而这个介词又放在关系代词前面时，which不能省。My father works in a factory which makes TV sets.This is the dictionary (which) I bought yesterday.This is the house (which ) LuXun once lived in.=This is the house in which Luxun once lived.(06上海) In an hour, we can travel to places _ would have taken our ancestors days to reach.A. where B. when C. which D. what（06江西）Do you have anything to say for yourselves?Yes，theres one point_ we must insist on A. why B. where C. how D. /（09江西）The house I grew up _ has been taken down and replaced by an office building.A. in it B. in C. in that D. in which2). 在非限制性定语从句中，指整个主句的内容，代替主句所表示的整体概念或部分概念，which在从句中可以作主语或宾语。She did very well in the exam, which made her parents happy.(2001春季) John said hed been working in the office for an hour, _ was true. A. he B. this C . which D. who(06上春)You can find whatever you need at the shopping centre, _ is always busy at the weekend.A. that B. where C. what D. which (08全国II) The road conditions there turned out to be very good, _was more than we could expect.A. it B. what C. which D. that（08浙江卷）Yesterday she sold her car, _ she bought a month ago.A. whom B. where C. that D. which（09山东）Whenever I met her, _ was fairly often, she greeted me with a sweet smile.A. who B. which C. when D. that（09全国 ） My friend showed me round the town, was very kind of him. A. which B. that C. where D. it5. that多指物,也可指人，在定语从句中作主语、宾语或表语.但不能直接跟在介词后。A plane is a machine that can fly.The house (that) he lived in is very large.The man who / that sold you that camera is a thief.He is the man (that/whom) you want to talk to.= He is the man to whom you want to talk. (05北春) Do you still remember the chicken farm _ we visited three months ago? A. where B. when C. that D. what 注1) 先行词如果有两个或者两个以上,一个指人,一个指物,则关系代词只能用that. They talked about things and persons that they remembered in the school.注2) that指物时,一般可以与which互用,但在下列情况下只用that, 不用which.1) 先行词为all, everything, nothing, something, anything, much, little等不定代词时.There is little (that) I can do to make up for the lost time.All that can be done has been done.(89) All _ is needed is a supply of oil.A. the thing B. that C. what D. which(07上春) The thought of going back home was _ kept him happy while he was working abroad.A. that B. all that C. all what D. which 2) 先行词被all, every, no, some, any, little, much等词修饰时Ive read all the books that you gave me. 3) 先行词被序数词修饰时 This is the first time that I have been here. 4) 先行词被最高级形容词修饰时 This is the best novel that Ive ever read. 5) 先行词被the only, the very, the last修饰时. This is the very book that I am looking for. The last place that we visited was the chemical works. Thats the only thing that we can do now. 6) 主句是以 who, which开头的